*{  
    margin: 0px;  
    padding: 0px;  
}  
video{  
    position: fixed;  
    right: 0px;  
    bottom: 0px;  
    min-width: 100%;  
    min-height: 100%;  
    height: auto;  
    width: auto;  
    /*加滤镜*/
    /*filter: blur(15px); //背景模糊设置 */
    /*-webkit-filter: grayscale(100%);*/  
    /*filter:grayscale(100%); //背景灰度设置*/  
    z-index:-11
}  
source{  
    min-width: 100%;  
    min-height: 100%;  
    height: auto;  
    width: auto;  
} 